On Mon, 14 Jul 2008, Theodore Tso wrote:
On Mon, Jul 14, 2008 at 07:55:10PM +0000, Holger Kiehl wrote:
You are right. I did compare the .config of both and noticed that
CONFIG_FAIR_GROUP_SCHED was set in the rc9 test but not in rc8 test.
Doing the test without CONFIG_FAIR_GROUP_SCHED gave me back 6%.
Sorry.
You may have told us already, but can you tell me the full
configuration of your benchmark machine? (i.e., how many CPU's, how
much memory, etc.) Also, what are the current mount options you are
currently using? And have you redone the ext3 benchmark number with
barriers enabled? Or was that the original number done with default
mount options that leave barriers disabled?
System has 4 Opteron 848 (2200MHz) CPU's, 8GB DDR400 memory (2GB per CPU),
8 15K SCSI U320 disk connected via two dual Adaptec ASC-39320A controllers
used as data disk, system disk is on 2 sata disks. The eight data disks,
where I do the testing, are combined to a software raid 1+0 (not Raid 10).
Because I am using software raid barriers are disabled, so for all testing
barriers where disabled. The mount options are: noatime,nodiratime,commit=15
There are also a 4 port and a 2 port Gigabit network card, but these where
not used. Here the output of lspci:
00:06.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8111 PCI (rev 07)
00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-8111 LPC (rev 05)
00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-8111 IDE (rev 03)
00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-8111 ACPI (rev 05)
00:0a.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8131 PCI-X Bridge (rev 12)
00:0a.1 PIC: Advanced Micro Devices [AMD] AMD-8131 PCI-X IOAPIC (rev 01)
00:0b.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8131 PCI-X Bridge (rev 12)
00:0b.1 PIC: Advanced Micro Devices [AMD] AMD-8131 PCI-X IOAPIC (rev 01)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
00:19.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:19.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:19.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:19.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
00:1a.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:1a.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:1a.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:1a.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
00:1b.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:1b.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:1b.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:1b.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:00.0 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 0b)
01:00.1 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 0b)
01:04.0 Mass storage controller: Promise Technology, Inc. PDC40775 (SATA 300 TX2plus) (rev 02)
01:06.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
02:02.0 SCSI storage controller: Adaptec ASC-39320A U320 (rev 10)
02:02.1 SCSI storage controller: Adaptec ASC-39320A U320 (rev 10)
02:03.0 SCSI storage controller: Adaptec ASC-39320A U320 (rev 10)
02:03.1 SCSI storage controller: Adaptec ASC-39320A U320 (rev 10)
03:01.0 PCI bridge: IBM PCI-X to PCI-X Bridge (rev 02)
03:03.0 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet Controller (rev 03)
03:03.1 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet Controller (rev 03)
04:04.0 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet Controller (rev 01)
04:04.1 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet Controller (rev 01)
04:06.0 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet Controller (rev 01)
04:06.1 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet Controller (rev 01)
Holger
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